>10%
Sedation (2/3 of patients)
1-10%
Dizziness,Headache,Hypotension,Hypoventilation,Miosis,Nausea,Sweating,Vertigo,Vomiting
<1%
Abdominal cramps,Amblyopia,Apnea,Blurred vision,Bradycardia,Coma,Confusion,Conjunctivitis,Constipation,Cyanosis,Depersonalization,Diplopia,Dreaming,Dry mouth,Dyspepsia,Dyspnea,Electrocardiographic (ECG) abnormalities,Euphoria,Fatigue,Flatulence,Hallucinations,Hypertension,Injection-site reactions,Malaise,Mental depression,Mydriasis,Nervousness,Paresthesia,Pruritus,Psychosis,Respiratory depression,Slurred speech,Tachycardia,Urticaria